nezha_defconfig: configure eth0 using DHCP

With the move to 5.19-rc1, the ethernet interface is now supported.
Configure it using DHCP at startup.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

configs/nezha_defconfig

@@ -1,6 +1,7 @@
 BR2_riscv=y
 BR2_GLOBAL_PATCH_DIR="board/nezha/patches"
 BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_5_17=y
+BR2_SYSTEM_DHCP="eth0"
 BR2_ROOTFS_OVERLAY="board/nezha/overlay"
 BR2_ROOTFS_POST_IMAGE_SCRIPT="support/scripts/genimage.sh"
 BR2_ROOTFS_POST_SCRIPT_ARGS="-c board/nezha/genimage.cfg"